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Effect of Preemptive Epidural Analgesia in Labor on Cytokine Production

This study has been completed.
Information provided by:
Rabin Medical Center Identifier:
First received: August 6, 2006
Last updated: April 11, 2016
Last verified: July 2006

During labor there is an increased production of inflammatory mediators called cytokines. Higher concentration of certain cytokines has been linked to adverse neonatal and maternal outcomes.

Epidural analgesia is commonly performed after the parturient feels labor pain.

We hypothesis that preemptive epidural analgesia (initiated before labor pain begins)can influence the production of cytokines.

Condition Intervention
Obstetric Pain
Procedure: Epidural analgesia

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Effect of Preemptive Epidural Analgesia in Labor on Pro and Anti-inflammatory Cytokine Production in a Mother and a Newborn

Further study details as provided by Rabin Medical Center:

Primary Outcome Measures:
  • Maternal cytokine levels upon enrollment
  • Maternal cytokine levels 24 hours after delivery
  • Umbilical cord cytokine levels at birth

Study Start Date: July 2006
Study Completion Date: July 2006
Primary Completion Date: July 2006 (Final data collection date for primary outcome measure)
Detailed Description:

The interrelationship between vaginal labor, cytokine production, and epidural analgesia is unknown. Vaginal delivery is thought to induce a maternal inflammatory response. Though epidural analgesia during labor was found to significantly influence peripartum maternal and newborn interleukin concentrations, these studies did not address at what stage epidural analgesia was performed. Preemptive analgesia has been found to be associated with attenuated proinflammatory cytokines, at least in the postoperative period.

Healthy ASA I term parturients (>37 weeks) being accepted into delivery ward and wanting epidural analgesia will be studied.

Parturients will be divided into two groups:

  • Group I- those who have painless contractions awaiting augmentation of labor.
  • Group II- parturients with cervical dilatation and painful labor (VAS >5).

Parturients in Group I will be given epidural analgesia immediately upon arrival in the labor ward before onset of painful contractions (VAS<3). Parturients in Group 2 will be given epidural analgesia as soon as possible.

Epidural analgesia protocol will be identical for both groups: graduated doses of bupivicaine 0.1% 15cc and 100 mcg fentanyl followed by patient controlled analgesia at a concentration of bupivicaine 0.1% and fentanyl 2 mcg/cc delivered at 10cc per hour with possible boluses of 5 cc every ten minutes.

Maternal serum will be drawn before epidural insertion and 18-24 hours after delivery. Placental blood will be drawn after delivery.

These blood sample will be assessed for IL-1Beta, TNF alpha, IL-1ra, IL-2, Il-6, IL-8, IL-10, IL-18.

The patient's chart will be prospectively analyzed for demographic information about parturient and complications and progress of labor.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female

Inclusion Criteria:

  1. Age>18
  2. Singleton pregnancy with no known fetal malformations
  3. Above or equal to 38 weeks of pregnancy

Exclusion Criteria:

  1. Systemic medical illnesses
  2. Chronic medications except for iron and vitamins
  3. Women developing fever > 380C
  4. Women with history of delivery of children with cerebral palsy
  5. History of infertility
  6. Premature contractions
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Please refer to this study by its identifier: NCT00361712

Rabin Medical Center/Beilinson Campus
Petach Tikva, Israel, 49100
Sponsors and Collaborators
Rabin Medical Center
Study Director: Sharon Orbach-Zinger, M.D. Department of Anesthesiology, Rabin Medical Center/Beilinson Hospital
  More Information Identifier: NCT00361712     History of Changes
Other Study ID Numbers: 003692
Study First Received: August 6, 2006
Last Updated: April 11, 2016

Keywords provided by Rabin Medical Center:

Additional relevant MeSH terms:
Labor Pain
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms processed this record on April 21, 2017